首先引入的依赖

<!-- poi库 -->  <dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>4.1.2</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>4.1.2</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml-schemas</artifactId><version>4.1.2</version></dependency>
<!-- Apache PDFBox库（用于处理PDF文件） --><dependency><groupId>org.apache.pdfbox</groupId><artifactId>pdfbox</artifactId><version>2.0.27</version></dependency><dependency><groupId>com.deepoove</groupId><artifactId>poi-tl</artifactId><version>1.9.0</version></dependency>

接下面的是template.docx文档，参数是以{{paramName}}格式的，为什么要以这种格式,是因为下面的方法,在替换参数的时候需要

XWPFTemplate template = XWPFTemplate.compile( "C:\\Users\\Administrator\\Desktop\\template.docx").render(jsonObject);

但是从数据库获取的参数跟模板中的参数一一对应上即可，格式如下（我是json形式展示的）：

{
    "countQuota": "1",
    "noEmission": "1",
    "greenConsume": "1",
    "pollutCharge": "1",
    "emissionPermit": "C:\\Users\\Administrator\\Desktop\\",
    "capitalOutlay": "1",
    "carbonTarget": "1",
    "zeroEmissionPower": "",
    "kgce": "",
    "productStandard": "",
    "totalConsume": "",
    "carbonEmission": "",
    "consumePer": "",
    "fileNames": "1.png,2.jpg,3.pdf",
    "directEmission": "",
    "indirectEmission": "1",
    "partiEmission": "1"
}

template.docx文档

大体上长这样

 这里主要给图片中4.15排污许可证那里插入文件

具体代码如下:

package com.example.threaddemo.test;import com.alibaba.excel.util.StringUtils;
import com.alibaba.fastjson.JSONObject;
import com.deepoove.poi.XWPFTemplate;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.Units;
import org.apache.poi.xwpf.usermodel.*;import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.List;
import java.util.Map;public class WordTest3 {public static void main(String[] args) throws Exception {String str = "{\n" +"\t\"countQuota\": \"1\",\n" +"\t\"noEmission\": \"1\",\n" +"\t\"greenConsume\": \"1\",\n" +"\t\"pollutCharge\": \"1\",\n" +"\t\"emissionPermit\": \"C:\\\\Users\\\\Administrator\\\\Desktop\\\\\",\n" +"\t\"capitalOutlay\": \"1\",\n" +"\t\"carbonTarget\": \"1\",\n" +"\t\"zeroEmissionPower\": \"\",\n" +"\t\"kgce\": \"\",\n" +"\t\"productStandard\": \"\",\n" +"\t\"totalConsume\": \"\",\n" +"\t\"carbonEmission\": \"\",\n" +"\t\"consumePer\": \"\",\n" +"\t\"fileNames\": \"1.png,2.jpg,滴滴电子发票.pdf\",\n" +"\t\"directEmission\": \"\",\n" +"\t\"indirectEmission\": \"1\",\n" +"\t\"partiEmission\": \"1\"\n" +"}";//str = str.replace("\n","");//str.replace("}","\"}");//str = str.replaceAll("\\\\667A", "667A");System.out.println("str = " + str);//Map<String, String> jsonObject = JSONObject.parseObject(str, Map.class);JSONObject jsonObject = JSONObject.parseObject(str);//.render(jsonObject) json,map或者实体类都是可以的,只要参数能对上就可以了XWPFTemplate template = XWPFTemplate.compile( "C:\\Users\\Administrator\\Desktop\\generate-template.docx").render(jsonObject);template.write(new FileOutputStream("C:\\Users\\Administrator\\Desktop\\1.docx"));template.close();if (StringUtils.isNotBlank(jsonObject.getString("emissionPermit"))) {//说明排污许可证上传了XWPFDocument document = new XWPFDocument(new FileInputStream("C:\\Users\\Administrator\\Desktop\\1.docx"));// 获取文档中的表格列表List<XWPFTable> tables = document.getTables();String path_pre = jsonObject.getString("emissionPermit");String fileNames = jsonObject.getString("fileNames");// 遍历表格for (XWPFTable table : tables) {// 遍历表格的行List<XWPFTableRow> rows = table.getRows();for (XWPFTableRow row : rows) {// 遍历行的单元格List<XWPFTableCell> cells = row.getTableCells();for (XWPFTableCell cell : cells) {// 获取单元格的文本内容String cellText = cell.getText();if (cellText.contains(path_pre)) {XWPFRun run = cell.getParagraphs().get(0).getRuns().get(0);run.setText("", 0);//置空里面的参数{{emissionPermit}}for (String filename : fileNames.split(",")) {String file_path = path_pre + filename;System.out.println("file_path = " + file_path);// 加载Word文档if (file_path.endsWith(".png")) {int type = XWPFDocument.PICTURE_TYPE_PNG;insertImage(file_path, type, run, filename);}if (file_path.endsWith(".jpg")) {int type = XWPFDocument.PICTURE_TYPE_JPEG;insertImage(file_path, type, run, filename);}if (file_path.endsWith(".pdf")) {String newFilePath = file_path.replace(".pdf", ".png");convertPdfToImage(file_path, newFilePath);int type = XWPFDocument.PICTURE_TYPE_PNG;insertImage(newFilePath, type, run, filename);File newFile = new File(newFilePath);newFile.delete();//把pdf生成的png图片删除}}// 保存修改后的文档FileOutputStream outputStream1 = new FileOutputStream("C:\\Users\\Administrator\\Desktop\\1.docx");document.write(outputStream1);outputStream1.close();}}}}}//jsonObject.remove("emissionPermit");}//将pdf转为pngprivate static void convertPdfToImage(String pdfPath, String imagePath) throws IOException {PDDocument document = PDDocument.load(new File(pdfPath));PDFRenderer renderer = new PDFRenderer(document);BufferedImage image = renderer.renderImage(0); // 渲染第一页为图像ImageIO.write(image, "PNG", new File(imagePath));document.close();}//将图片插入到指定位置private static void insertImage(String filePath, int type, XWPFRun run, String fileName) {try (InputStream pngInputStream = new FileInputStream(filePath)) {byte[] jpgBytes = IOUtils.toByteArray(pngInputStream);run.addPicture(new ByteArrayInputStream(jpgBytes), type, fileName, Units.toEMU(300), Units.toEMU(200));} catch (Exception e) {//LOGGER.info("tcfd插入图片异常,异常原因:",e.getMessage(),e);throw new RuntimeException(e);}}
}

在网上找了半天也么有什么好的方式可以在指定的位置直接将pdf插入进去，如果哪位大神有好的方式，可以留个言

如果在运行的过程中有这个报错：java.lang.NoClassDefFoundError: org/apache/fontbox/cmap/CMapParser

请加下下面的依赖

        <dependency><groupId>org.apache.pdfbox</groupId><artifactId>fontbox</artifactId><version>2.0.27</version></dependency>